Glass pump.



G. A. RATHBUN.

GLASS PUMP.

APPLICATION FILED Auc.22, 1914.

Patented May 23,1916.

Hai/wlw,

Inventor 'wiy Witnesses Attorneys GrEoEGE ALFRED EATHLBUN, or coALINGA,cALrronmA.

feLAss PUMP.

Speciiicatiyon of Letters Patent. fatnted lVIzty 23, r1916.

Application med August 22, 1914. Ysve'ria1 No. 855;,105.A

To @ZZ/whom t may concern. Y d

Be it known that I, GEORGE lALFRED RATH- BUN, a citizen of ther-UnitedStates,fresiding at Coalinga, in the county of lFresno Yand State ofvCalifornia, have invented a newand useful Glass Pump, ofV which thefollowing is aspecilication. A

Thedevice forming thek subject matterof this application is a pumpadapted to` be employed upon Artesian and oil wells.

- One object of the present inventionzis to provide ya pump of the ltypedescribed in 'whichthe liner of the barrel and `thefjacket of thepistonv or plunger are fashioned from glass. Y y Y t Another object ofthe invention is to provide a pump Vembodying a construction which Vwillmakey possible the usefof glass in the formation Vof the elements above`mentioned.

Another object'iof the invention is to provide/.a pump embodying meansvwhereby an increment yof the material handled by the 4 'pump vmay bepermitted to enter between the vcasing and the liner 'of' the pumpbarrel, thereby to form a sustaining cushion.

Itis within the scope of the invention to vimprove generally and toenhance the utility yof devices of that type to which the presentinvention apperta'ins. i

Withl the aboveand'other obJects in view,

which will appear'as the description prolc'eeds, the invention residesin the combination and arrangement of parts and in the details ofvconstruction hereinafter described and claimed, it being understood thatchanges in the precise embodiment of the invention herein disclosed canbe made within the scope of what is claimed` without departing from thespirit of the invention. In the accompanying drawings -Figure v1 showsin vertical longitudinal section, a

pumpembodying the present invention; Fig. 2 is across section on theline 2-2 of Fig. 1; Fig. 3 is a cross section on the line 3-3 of Fig. 1;Fig. 4 is a fragmental longi- Y tudinal sectional vdetail enlarged fromFig.

1; Fig. 5 is across section on the line'5-r5 ofFig. l. Y

The barrel of the pumpl herein disclosed comprises a `casing 1v which'vpreferably is made ofmetal. The casing 1 of the pump barrel is oftubular'construction and located in the casing is a tubular liner 2which preferably is made of glass. rThe liner 2 is -made of glass.

spaced from the casing l, as indicated at 11.v Threadedor otherwisesecured to the vlower end of thecasing 1 is a cap 3, comprisingan'upstanding flange 4 toV which the casing 1 is immediately secured.The cap 3 lncludes a depending flange '5. The cap is centrally open vasindicated at 6. The lower yendzofvthefliner 2 abuts against the cap 3and thus the cap 3 forms a closure for the lower end of the space 11existing between the casing andthe liner. An upper cap 7 is provided,the cap 7 being equipped intermediate its ends with an inwardly extendedAH ange 8 against which the upper end of the 'liner 2. abuts,` the capbeing shouldered as ylndicatedlat) tov receive the upper end of thecasing l.k vThe cap v7 embodies adependlngflange 12 to which the casinglis threaded, the cap including an upstanding iange 14 having a threadedconnection with the tubing 15 ofthe well. In the transverse flange- 8ofthe cap 7 are formeda plurality of'not'ches 10. These notches 10 giveaccess to the space 11 between thecasing 1 and the liner-2 so that, whenthe'piston of the pump is 1n operation, oil, sand, or other mafiscterial handled by the pump may find its 7 way between the casing 1 andthe liner 2 to 'serve as' a cushion f between these"elements.- Thematerial'thus located is' indicated bythe reference character 32.

The novelty `in the present invention resides essentially in the pumpbarrelv and in "the'lpiston and it will therefore be understood that anyform of foot-valve may be employed. v In the present instance, and by tway of illustration, a tube 16 is threaded mto the flange 5 of the lowercap '3 and threaded to the lower end of the tube 16 is a foot 17 intowhich is threaded a cage 18 carrying a ball valve 19. Fixed to andupstandingfrom the cage 18 is a rod 20. However, vas hereinbeforestated, any form of Vfoot-valve may be employed. v

The plunger or piston of the pump is a composite structure and embodiesa tubular core 21, preferably fashioned from metal. Surrounding the core21 is a tubular jacket 22 embracing the core closely and preferably Awasherv 23, ordinarily made of metal, surrounds the lower portion of thetubular core 21 and forms an abutment for the lower end of the jacket22. A nut 24 is threaded onto the lower end of the core 21 and holds thewasher 23 in place, theV nut 24 yhavingan opening 25 Ithrough the rod 2Opasses, the opening 25l being of considerably greater diameter than therod 20, in order to vpermit "the material which is operated upon to passreadily through` the plunger or piston when the latter dis re.

' ciprocated. The upper end 26 of the ,core 21 of the ypiston `upsta'ndsabove the upper end Y atransverse shoulder 28 which engages .the

of the jacket 22. Threaded ,ontosthe end portion 26 of the core 21 is anut 27 having upper lend of .the core 21; -Threaded or otherwise securedto :the 4exterior-:of the lnut 27 is a cage 29 containing a .ball valve80700- operating with 1a valve seat .50 bound ibetween the lnut and thezcagef v Y The lnumeral '3 1 4indicates .anywsuitable Vmeans forimparting a V:reciprocat-lng motion to the plunger or piston.

So far as the general operation of: the

pump herein disclosed is concerned, it willY be understood that wihenthepiston moves' downwardly, the valve 219 will Aclose and the valve 130will open, and, when VV`the piston moves upwardly, the valve 13() willcloseand the valve 19 will open. The function of the rod 20 is to unseatthe valve 30 atthe-ex- -tremity of .the downward strokeol:l the pis-`ton, should the valve 30 be stuck in its seat.V

` cates. The jacket 22 of the piston and the liner` 2 .of the pumpbarrel, being made o1. glass, will not score-.or wear lrapidly,underl.the Iattrition .of vthe materialwh-ich is handled. The generalconstruction 'is such than ments. hereinbefore referred to specically.

glas's'lmay'be used-to fashion certain ele- The washer 23 prevents acracking orV 4`chi pingo the-glass acket22 by thenut 24.

is claimed is aving thus described the invention,vwliat 1.v In a pump,arbarrel; and a pistony mounted to reciprocate inthe barrel; the `piston`1c,oln-prising. a v tubular core; nuts threadedon the ends'of theCorey-a jacketv surrounding the .-eore-,andA .located betweenV the'nuts; and Y a .spacer surrounding the: core and flocated between vonenut andthe endroit' piston comprising za tubular c ore; vnuts mounted.oneppositeg'ends of .the core; a

- tubular vjacket .surrounding the core and located between t'he nuts;.a Aball,cage,threaded 'and'. a ball inthe cage, .the

.on-to; one nutz; ball .coperati-ng with said nut.`

- 3.- 'In a pump, aubarrel comprising, a 'cas- Y ing; a-glass lineri-nthe casing. yandfspaced from the casmg to define an open compartment.; acapforming yagconneetion between 1 the end of :the casngland the; liner,Ythe "cap havingan openng communicating with the ,,compartment,1V and'ccrgiistitutingpV a vIneans' whereby the piston liftedliquid maybe`vd`ep'osited .in vto Y .the compartment. to act. as a cushion for the-l-iner and -apiston mounted 12o-reciprocate fin'theliner.

Irl-testimony thatfli- Claim the .foregoing 'as in the presenceoftwowitnesses;

YY my own,l I .have heretojaflxed ymy signature 1 econ-@ALFRED RATHBNQ fY pumpga-barrelgfand va piston".` v:.moun-tedito reciprocatein-rthebarrel, the

